6885655911domain: NAppears in sequencesNumber of (n+2)X(3+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.at n=5A251848Number of (n+2)X(6+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.at n=2A251851